• 제목/요약/키워드: Development research

검색결과 62,750건 처리시간 0.093초

밭벼와 콩 재배지의 온실가스 배출 (Emission of Greenhouse Gases from Upland Rice and Soybean)

  • 신용광;안종웅;고문환;심재천
    • 한국토양비료학회지
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    • 제36권4호
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    • pp.256-262
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    • 2003
  • 밭벼와 콩 재배지에서 메탄과 아산화질소 배출을 측정하였다. 2001년 4월 28일 폭 30 cm 간격으로 대진벼를 파종하였다. 포장의 물관리는 스프링클러 관개와 천연강우 관개로 하였다. 콩 품종 장엽콩, 태광콩, 황금콩을 2001년 6월 16일에 $60{\times}15cm$ 간격으로 한 구멍에 2알씩 파종하였다. 기체시료는 주 2회씩 채취하여 메탄과 아산화질소를 분석하였다. 밭벼 작기중 메탄 배출은 스프링클러 관개구에서 $3.5kg\;CH_4\;ha^{-1}$ 였었고 천연관개구에서 $-1.7kg\;CH_4\;ha^{-1}$ 였었다. 밭벼 작기중 아산화질소 배출은 스프링클러 관개구에서 $50.8kg\;N_2O\;ha^{-1}$ 였었고 천연관개구에서 $8.3kg\;N_2O\;ha^{-1}$ 였었다. 밭벼 재배지에서 배출하는 온실가스 GWP는 스프링클러 관개구와 천연관개구에서 각각 15,822 및 $2,216kg\;CO_2\;ha^{-1}$ 였었다. 콩 작기중 메탄 배출은 장엽콩 재배구에서 $-14.7kg\;CH_4\;ha^{-1}$ 였었고 태광콩 재배구에서 $-4.3kg\;CH_4\;ha^{-1}$, 황금콩 재배구에서 $4.8kg\;CH_4\;ha^{-1}$ 였었다. 콩 작기중 아산화질소 배출은 장엽콩 재배구에서 $4.7kg\;N_2O\;ha^{-1}$, 태광콩 재배구에서 $4.6kg\;N_2O\;ha^{-1}$, 그리고 황금콩 재배구에서 $3.0kg\;N_2O\;ha^{-1}$ 였었다. 콩 작기중 배출하는 온실가스 GWP는 장엽콩, 태광콩, 황금콩 재배구에서 각각 1,152, 1,323 및 $1,027kg\;CO_2\;ha^{-1}$ 였었다.

교차로 교통상충기준 개발 및 평가에 관한 연구 (Development and Evaluation of Traffic Conflict Criteria at an intersection)

  • 하태준;박형규;박제진;박찬모
    • 대한교통학회지
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    • 제20권2호
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    • pp.105-115
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    • 2002
  • 현재까지 교차로 위험도 측정 방법은 실제 사고 자료를 이용한 분석을 통해 이루어져 왔다. 하지만 사고기록 자료의 수집에 많은 시간이 소요되고 사고기록자료의 신뢰성과 정확성의 결여로 인하여 사고기록자료를 통해 신속하고 정확한 교차로의 위험정도와 안전대책을 결정하기란 매우 어렵다고 할 수 있다. 따라서, 보다 신속하고 정확하게 교차로의 위험도를 예측할 수 있는 기법이 요구되는 바, 그 대안으로 교통상충기법이 제시되고 있다. 하지만 상충측정시 측정기준이 명확하지 않아 조사자의 주관적 판단에 의존하게 되므로 상충자료의 신뢰성에 문제점이 제시되고 있으며, 이에따라 객관적인 상충측정기준 수립에 관한 필요성이 대두되고 있다. 본 논문에서는 교차로에서 발생하는 상충유형을 선행차량과 후행차량의 진행방향별 상충특성을 중심으로 후미추돌, 측면충돌, 직각충돌, 그리고 대향좌회전충돌유형의 4가지로 분류하고, 공학적인 이론을 기반으로 정확하고 객관적인 상충측정기준을 정립하였으며, 정립된 상충기준에 의한 상충조사자료와 사고자료의 상관관계 분석을 통해 본 연구에서 제시한 상충기준의 적합성을 검증하였으며, 사고-상충, EPDO-상충간의 단순선형회귀분석을 실시하여 상충조사를 통하여 교차로의 위험도를 예측할 수 있음을 밝혔다. 교통상충측정시 본 연구에서 제시한 상충측정기준을 적용한다면 보다 신속하고 정확한 교차로 위험도 예측이 가능할 것이며, 이를 통해 교차로 운영개선효과와 위험교차로의 선정 및 관리 등에 효율적으로 활용될 수 있을 것으로 기대된다. 향후 본 연구에서 정립된 상충기준의 타지역 타교차로에 확대 적용 및 검증과 더불어, 본 연구에서 제시하는 유형에 포함되지 않는 기타 유형에 대한 상충기준의 개발이 필요할 것이다.에 가까운 우수한 해를 얻을 수 있다는 것을 알 수 있다. 비록 프로그래밍 과정이나 이론의 정식화가 유한요소법에 비해 상당히 어려운 점은 있으나 무요소법은 요소의 정보를 필요치 않으므로 사용자 입장에서는 매우 편리할 것이다. 앞으로 경계조건을 효과적으로 만족시키는 문제를 해결하고 효과적인 알고리즘이 개발된다면 실용적으로 유한요소법을 대신할 수 있는 좋은 대안이 될 수 있을 것이라 생각된다.ead up 되었을 때 3~6dB 정도 높게 나타났다.. 5. 마라도 주변해역의 추.동계 방어채낚기어장은 한국연안역으로부터 월동장 내지 산란장으로 남하하는 방어어군이 마라도 주변에 나타나는 연안계수와 외양계수(대마난류) 간에 형성되는 수온.염분전선, 섬주변의 소규모 와, 강한조류 및 지형적 특성(불규칙한 해저지형 및 고립도서)에 의해 이루어지는 왕성한 수평 및 연직 혼합 등과 같은 어장학적 호조건에 의해 마라도 주변에 체류하게 되고, 이들 체류어군은 조류방향에 따라 섬의 조상 측에 농밀군을 형성하는 섬의 조상측 어장이다.향을 주지 않는 것으로 나타났으므로 청소년 각자의 식습관 및 식품 섭취에 대한 관심을 고취시킬 필요가 있다고 생각된다.d with an MR peak in the vicinity of the coercive field. The low-field tunnel-type MR characteristics of thin films deposited on different substrates originates from the behavior of grain boundary properties. 않고 단지 안전 보호측면에서의 연구가 이루어졌을 뿐이었다. 따라서 서열환경하에서 머리부분의 쾌적성을 고려한 다양한 작업

핵이식 마우스 생산에 관한 연구 (Studies on production of nuclear transplanted mouse embryos)

  • 이병천;조충호;황우석
    • 대한수의학회지
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    • 제33권1호
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    • pp.151-169
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    • 1993
  • The present study was carried out to investigate the best condition for nuclear-cytoplasm fusion and in vitro culture of nuclear transplanted embryos and to investigate the production of nuclear transplanted offsprings. The nuclei from 2-, 4- and 8-cell mouse embryos were transferred into enucleated 2-cell embryos, and the reconstituted embryos were submitted to direct current(DC) pulses at output voltage of 1.0, 1.5 and 2.0 kV/cm for 100, 150 and $200{\mu}$ sec to induce cell fusion. 1. The culture of intact or zona cut 2-cell embryos in the medium supplemented with cytochalasin B($5{\mu}g/m{\ell}$) and colcemide($0.1{\mu}g/m{\ell}$)for 30 and 60 minutes did not affect the development to later stage. 2. The in vitro developmental rates of group A(a nucleus from one of the blastomeres was removed) and B(electrofusion of group A) were significantly lower than that of control group(p<0.01). 3. When nuclear transplanted embryos were submitted to electrofusion, the significantly higher fusion rates of 2-cell donor nuclei were achieved at the electric field strength of DC 1.5kV/cm for 100 and $150{\mu}$ sec, DC 2.0 kV/cm for $100{\sim}200{\mu}$ sec than DC 1.0 kV/cm for 100 and $150{\mu}$ sec(p<0.01). The significantly higher fusion rates of 4-cell donor nuclei were achieved at DC 2.0 kV/cm for 100 and $150{\mu}$ sec than DC 1.0kV/cm for $100{\sim}200{\mu}$ sec(p<0.01). These fusion rates in 8-cell donor nuclei were 88.7~99.3%. 4. The developmental potency to blastocyst in 2- and 4-cell donor nuclei was significantly higher in DC 1.0 and 2.0 kV/cm for $100{\sim}200{\mu}$ sec treated group and DC 2.0 kV/cm for 150 and $200{\mu}$ sec treated group (p<0.01). The developmental potency to blastocyst in 8-cell donor nuclei was significantly higher in DC 2.0 kV/cm for $100{\mu}$ sec treated group than in DC 1.0 kV/cm for $100{\mu}$ sec treated group and DC 2.0 kV/cm for 150 and $200{\mu}$ sec treated group(p<001). 5. The developmental potency to blastocyst after nuclear transplantation was significantly higher in 2-cell donor nuclei than in 8-cell donor nuclei(p<0.01). 6. The success rate of nuclear injection into enucleated 2-cell embryos was significantly higher in 2-cell donor nuclei than in 4- or 8-cell donor nuclei(p<0.01). 7. The culture time taken for the nuclear transplanted 2-cell embryos to blastocyst stage was significantly longer in 2-cell donor nuclei than in 8-cell donor nuclei(p<0.01). 8. There was no significant difference in the developmental potency of nuclear transplanted embryos within the concentration of EGF at 0 to 15 ng per $m{\ell}$ of BMOC-3 solution. 9. The production rates of offspring after transfer of nuclear transplanted embryos to recipient mouse were significantly higher in 2-cell donor nuclei than in 8-cell donor nuclei(p<0.01).

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데이터방송 인터랙티브 게임 규제 및 이용자 인식에 관한 연구: 승부게임을 중심으로 (A Research on the Regulations and Perception of Interactive Game in Data Broadcasting: Special Emphasis on the TV-Betting Game)

  • 변동현;정문열;배홍섭
    • 한국언론정보학보
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    • 제35권
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    • pp.250-291
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    • 2006
  • 본 논문은 유럽 등 해외에서 현재 활성화 되어있는 카드게임, 경마게임 등을 활용한 데이터방송 승부게임(TV-betting) 서비스를 조작하여 이를 경험한 패널집단을 대상으로 인터랙티브게임 관련 긍정적, 부정적 인식을 조사하여 국내에서 데이터방송 승부게임에 대한 규제문제와 그 도입가능성을 모색해 보았다. 조사연구를 수행하기 위해 국내 디지털케이블방송에서의 데이터방송 표준인 OCAP시스템 환경에서 데이터방송 승부게임 데모프로그램을 제작하고 패널집단이 이 프로그램의 시청경험을 하게 한 뒤에 심층적인 면접을 시행하였다. 그 결과를 정리하면 다음과 같다. 패널집단은 데이터방송 승부게임이 오락효과, 감정정화, 스트레스 해소 등 시청자에게 즐거움을 주는 긍정적 요소가 많으나 사회적 환경 때문에 외국과 같이 쉽게 도입되기는 어려울 것으로 인식하고 있었다. 그리고 데이터방송 승부게임이 도입되기 위해서는 결제에서의 안정된 보안장치를 기반으로 매체 신뢰도가 보장 되어야 하고, 승부게임을 너무 자주하지 않게끔 시간적 제약을 고려한 방송편성, 베팅(betting)한도의 제한, 다른 데이터방송 가입자들의 셋탑박스에 접속하여 게임을 하는 경우를 차단하는 등 일련의 규제적 시스템 장치를 통해서 과도한 사행성을 억제해야 한다고 판단하고 있었다. 이에 여러 가지 부작용을 최소화하는 방안 등 정부의 법적인 규제 틀 안에서 승부게임의 단계적인 도입이 검토될 수 있다고 인식하고 있었다. 정부는 이를 고려해 장기적인 관점에서 데이터방송 정책수립을 해야 하고, 이를 통해 법적인 규제 틀 안에서 안정적으로 데이터방송 승부게임을 즐길 수 있는 방안이 마련된다면 향후 국내에서 인터랙티브 TV게임이 오락적인 기능과 함께 산업적으로는 데이터방송 등 뉴미디어 산업 활성화를 도모할 수 있을 것으로 기대된다.에서 이야기하는 사회문화적, 역사적 상황이 다른 문화에서는 같은 대상에 대한 이해가 달라질 수도 있다는 예시를 보여준 것이다. 이렇듯 "한류"의 정체성을 파악하기 위해서는 우선 각 문화의 다양성과 특수성에 대한 연구가 선행되어야 하고 현재의 우리와 다른 사람들 사이에 진행되고 있는 문화적 욕구들이 어떻게 생성되고 있는지 현장에서 연구할 필요가 있다. 덧붙여 한국의 대중문화가 이러한 욕구에 잘 부합되고 있는지, 새로운 무엇을 만들어 내고 있지는 않은지 연구할 필요성을 절실히 느낀다.해 측정하였다. 실험은 4개의 집단으로 나누어져 실시하였는데 한 집단은 지각된 위험과 희소성 메시지에 동시에 노출되도록 하였고 두 번째 집단과 세 번째 집단은 각각의 두 요인 중 하나의 요인에만 노출되도록 하였다. 그리고 나머지 한 집단은 통제집단으로 지각된 위험이나 희소성 메시지를 모두 처치하지 않은 프로그램을 시청하게 하였다. 연구결과 흥미로운 사실들이 발견되었는데 이용경험에 상관없이 모든 이용자들은 지각된 위험에 부정적인 반응을 보였으며 특히 이용경험이 풍부한 홈쇼핑이용자들인 경우 이용경험이 적은 소비자에 비해 지각된 위험에 더욱 민감하게 반응함을 알 수 있었다. 또한 희소성 메시지에 대해서는 통계적으로는 유의미하지 않았지만 이용경험이 높은 소비자가 이용경험이 적은 소비자들 보다 오히려 부정적인 반응을 보임을 알 수 있었다. 또한 지각된 위험과 희소성 메시지의 상호작용효과의 경우 이용경험이 높은 집단의 소비자가 특히 제품에 대한 태도반응에서 매우 부정적인 반응을 보임을 알 수 있었다. 이러한 사실은 이용경험이 풍부한 소비자일수록 신뢰가 생기지 않는 지각된 위험의 상황에서 희소성메시지가 제시될 때 희소성메시지의 설득적 의도를 위협적인 요소로 생각한다고 해석할 수 있다. 이상의 결과는 선행

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본태성 고혈압 환자의 자가간호증진을 위한 자기조절 프로그램 효과 -Orem이론과 Bandura이론의 합성과 검증- (An Effect of the Self-Regulation Program for Hypertensives -Synthesis & testing of Orem and Bandura's theory-)

  • 박영임;홍여신
    • 지역사회간호학회지
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    • 제5권2호
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    • pp.109-129
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    • 1994
  • Chronic health problems has become a major concern and challenge to the health care professionals today. Especially hypertension, one of the leading primary cause of death in Korea, is a typical chronic disease requiring adequate and continuous management. Though these hypertensives need to maintain desirable health practice by themselves for their life time, many previous studies indicated that most of the essential hypertensives have no specific symptoms and thus, reluctant to follow appropriate medical regimens causing the condition further aggravated and complicated. Self-care is an essential factor that keeps chronic patients in control of their health and wellness. Thus this study was conducted to identify the effect of the comprehensive self-regulation program as a nursing intervention on the promotion self-care performance and improvement in physical parameters of hypertensives. For this purpose, a one group quasi-experimental research with pre and post test design was used. The subjects of the study was consisted of thirty persons with mild or moderate essential hypertension from two companies in Cheong-ju city. The whole program was carried out from October, 1993 to February, 1994. The self-regulation program was consisted with group education on hypertension and self-care, self-regulation including the blood pressure self-monitoring and recording, recording of daily self-care activities, and encouraging and reinforcing self-efficacy through verbal persuation and enactive attainment. The subjects were asked to measure their own blood pressure by themselves twice per day and to record blood pressure and the daily self-care performance according to the instructions provided during the whole period of 9 weeks. The instruments used for data collection in this study were as follows : 1) Instruments used for measuring the knowledge about hypertension, multiple health locus of control, and perceived benifits and barriers were adapted from previous studies and modified by author to be fit for the subjects. 2) Self-efficacy scale and self-care performance record were developed by the author. 3) Physiological parameters included systolic / diastolic blood pressure, body weight, level of blood cholesterol, and 24hour ambulatory blood pressure. The post-experimental Cronbach's Alpha as the reliability test of scales were 0.703-0.897, an appropriate level of confidence. The effect of the program was analyzed by experimental stages ; the first week, the fifth week, and the ninth week since the experimental imput began. Data were analyzed by the SPSS PC+ program with paired t-test and t-test, repeated measure ANOVA, and pearson's correlation to de termine the effect of program. The results were as follows : 1) After the self-regulation program, scores on knowledge(t=-2.41, p=.011), perceived self-efficacy (F=5.60, p=.001), self-care performance(F=22.31, p=.0001) were significantly higher than those before the program. 2) After the program, both systolic and diastolic blood pressure were significantly lower than those before the program(F=10.89 -13.11, p=.0001). However in 24hour ambulatory blood pressure, systolic mean pressure was nearly significantly lower, but not in diastolic mean pressure. 3) After the program, the body weight was significant decresed(t=5.53, p=.0001), but the blood cholesterol level was not decreased significantly except in those cases with higher cholesterol level. 4) There were significant relationships between changes in self-care performance and diastolic pressure at 1st week (r=.3389, p=.033) and changes in self-care performance and systolic pressure at 9th week(r=.3651, p=.024). 5) There were significant relationship between perceived self-efficacy and self-care performance at 5th week(r=.5313, p=.001) and 9th week (r=.3026, p=.052). 6) After the program, internal health locus of control and perceived benefits did not show significant change, but perceived barriers was significantly lower than those before the program (t=3.57, p=.0001). From the above results, it can be concluded that 1) The self-regulation program is an effective nursing strategy to promote self-care performance of hypertensives and to lower the blood pressure. Thus this program can be recommended in the management of the hypertensives in workplaces and community settings. 2) The synthesis of Orem's self-care theory and Bandura's self-regulation & self-efficacy theory in this study was proved to enhance explanation and prediction of the change of self-care behavior. Thus the result of the study would contribute in development of the self-care theory and an expansion of practice-theory.

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데이터 웨어하우징의 구현성공과 시스템성공 결정요인 (Factors Affecting the Implementation Success of Data Warehousing Systems)

  • 김병곤;박순창;김종옥
    • 한국정보기술응용학회:학술대회논문집
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    • 한국정보기술응용학회 2007년도 춘계학술대회
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    • pp.234-245
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    • 2007
  • The empirical studies on the implementation of data warehousing systems (DWS) are lacking while there exist a number of studies on the implementation of IS. This study intends to examine the factors affecting the implementation success of DWS. The study adopts the empirical analysis of the sample of 112 responses from DWS practitioners. The study results suggest several implications for researchers and practitioners. First, when the support from top management becomes great, the implementation success of DWS in organizational aspects is more likely. When the support from top management exists, users are more likely to be encouraged to use DWS, and organizational resistance to use DWS is well coped with increasing the possibility of implementation success of DWS. The support of resource increases the implementation success of DWS in project aspects while it is not significantly related to the implementation success of DWS in organizational aspects. The support of funds, human resources, and other efforts enhances the possibility of successful implementation of project; the project does not exceed the time and resource budgets and meet the functional requirements. The effect of resource support, however, is not significantly related to the organizational success. The user involvement in systems implementation affects the implementation success of DWS in organizational and project aspects. The success of DWS implementation is significantly related to the users' commitment to the project and the proactive involvement in the implementation tasks. users' task. The observation of the behaviors of competitors which possibly increases data quality does not affect the implementation success of DWS. This indicates that the quality of data such as data consistency and accuracy is not ensured through the understanding of the behaviors of competitors, and this does not affect the data integration and the successful implementation of DWS projects. The prototyping for the DWS implementation positively affects the implementation success of DWS. This indicates that the extent of understanding requirements and the communication among project members increases the implementation success of DWS. Developing the prototypes for DWS ensures the acquirement of accurate or integrated data, the flexible processing of data, and the adaptation into new organizational conditions. The extent of consulting activities in DWS projects increases the implementation success of DWS in project aspects. The continuous support for consulting activities and technology transfer enhances the adherence to the project schedule preventing the exceeding use of project budget and ensuring the implementation of intended system functions; this ultimately leads to the successful implementation of DWS projects. The research hypothesis that the capability of project teams affects the implementation success of DWS is rejected. The technical ability of team members and human relationship skills themselves do not affect the successful implementation of DWS projects. The quality of the system which provided data to DWS affects the implementation success of DWS in technical aspects. The standardization of data definition and the commitment to the technical standard increase the possibility of overcoming the technical problems of DWS. Further, the development technology of DWS affects the implementation success of DWS. The hardware, software, implementation methodology, and implementation tools contribute to effective integration and classification of data in various forms. In addition, the implementation success of DWS in organizational and project aspects increases the data quality and system quality of DWS while the implementation success of DWS in technical aspects does not affect the data quality and system quality of DWS. The data and systems quality increases the effective processing of individual tasks, and reduces the decision making times and efforts enhancing the perceived benefits of DWS.

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천마추출물의 성분분석 및 in vitro 생물활성에 관한 연구 (A Studies on the Chemical Composition and in vitro Biological Activities of a Hot Water Extracts of Gastrodia elata)

  • 강태수;공영준;권혜정;최병곤;홍정기;박용길
    • 한국균학회지
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    • 제30권2호
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    • pp.136-141
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    • 2002
  • 본 연구는 천마의 성분과 생리활성을 규명하기 위하여 성분분석과 다양한 생리활성 (암세포 생육 저해효능, 항균력, ${\alpha}$-glucosidasege활성 저해효능, angiotensin converting enzyme 저해효능, glutathion S-transferase 활성)을 검토하였다. 천마의 일반성분은 조단백질 5.4%, 조회분 2.6%, 조지방 3.6%, 조섬유 3.3%, 수분 8.1%, 전당이 77%이었으며, 무기질함량은 칼륨(1,150mg/100g) > 인(300mg/100g) 순이었다. 천마추출물의 암세포(간암; Hep3B, 유방암: MCF-7, 폐암; A549, 위암; AGS)에 대한 생육 저해능은 천마추출물 시료농도가 증가함에 따라 증가하는 경향을 보여 1.0mg/ml에서 위암세포(AGS)에 대한 생육 저해능이 83%로 가장 높았다. 천마추출물의 항균활성은 Bacillus subtilis와 Pseudomonas aeruginosa에 대하여 미약한 활성을 나타내었으며, 그 이외의 피검균에 대하여는 항균활성이 거의 없었다. ${\alpha}$-glucosidase효소 활성 저해능은 천마추출물 시료가 1.0mg/ml일때 64%의 높은 저해능을 보였다. ACE활성 저하능은 시료가 $0.2{\sim}1.0mg/ml$의 농도 범위에서 $63{\sim}89%$이었고, 1.0mg/ml일 때 89%로 높은 저해능을 보였다. Glutathion S-transferase(GST) 활성능은 추출물 농도가 1.0mg/ml일 때 221%의 높은 활성을 나타내었다. 이상의 결과로부터 천마는 건강식품이나 기능성 식품의 소재로서 활용이 가능할 것으로 판단되었다.

PLS 경로모형을 이용한 IT 조직의 BSC 성공요인간의 인과관계 분석 (A PLS Path Modeling Approach on the Cause-and-Effect Relationships among BSC Critical Success Factors for IT Organizations)

  • 이정훈;신택수;임종호
    • Asia pacific journal of information systems
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    • 제17권4호
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    • pp.207-228
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    • 2007
  • Measuring Information Technology(IT) organizations' activities have been limited to mainly measure financial indicators for a long time. However, according to the multifarious functions of Information System, a number of researches have been done for the new trends on measurement methodologies that come with financial measurement as well as new measurement methods. Especially, the researches on IT Balanced Scorecard(BSC), concept from BSC measuring IT activities have been done as well in recent years. BSC provides more advantages than only integration of non-financial measures in a performance measurement system. The core of BSC rests on the cause-and-effect relationships between measures to allow prediction of value chain performance measures to allow prediction of value chain performance measures, communication, and realization of the corporate strategy and incentive controlled actions. More recently, BSC proponents have focused on the need to tie measures together into a causal chain of performance, and to test the validity of these hypothesized effects to guide the development of strategy. Kaplan and Norton[2001] argue that one of the primary benefits of the balanced scorecard is its use in gauging the success of strategy. Norreklit[2000] insist that the cause-and-effect chain is central to the balanced scorecard. The cause-and-effect chain is also central to the IT BSC. However, prior researches on relationship between information system and enterprise strategies as well as connection between various IT performance measurement indicators are not so much studied. Ittner et al.[2003] report that 77% of all surveyed companies with an implemented BSC place no or only little interest on soundly modeled cause-and-effect relationships despite of the importance of cause-and-effect chains as an integral part of BSC. This shortcoming can be explained with one theoretical and one practical reason[Blumenberg and Hinz, 2006]. From a theoretical point of view, causalities within the BSC method and their application are only vaguely described by Kaplan and Norton. From a practical consideration, modeling corporate causalities is a complex task due to tedious data acquisition and following reliability maintenance. However, cause-and effect relationships are an essential part of BSCs because they differentiate performance measurement systems like BSCs from simple key performance indicator(KPI) lists. KPI lists present an ad-hoc collection of measures to managers but do not allow for a comprehensive view on corporate performance. Instead, performance measurement system like BSCs tries to model the relationships of the underlying value chain in cause-and-effect relationships. Therefore, to overcome the deficiencies of causal modeling in IT BSC, sound and robust causal modeling approaches are required in theory as well as in practice for offering a solution. The propose of this study is to suggest critical success factors(CSFs) and KPIs for measuring performance for IT organizations and empirically validate the casual relationships between those CSFs. For this purpose, we define four perspectives of BSC for IT organizations according to Van Grembergen's study[2000] as follows. The Future Orientation perspective represents the human and technology resources needed by IT to deliver its services. The Operational Excellence perspective represents the IT processes employed to develop and deliver the applications. The User Orientation perspective represents the user evaluation of IT. The Business Contribution perspective captures the business value of the IT investments. Each of these perspectives has to be translated into corresponding metrics and measures that assess the current situations. This study suggests 12 CSFs for IT BSC based on the previous IT BSC's studies and COBIT 4.1. These CSFs consist of 51 KPIs. We defines the cause-and-effect relationships among BSC CSFs for IT Organizations as follows. The Future Orientation perspective will have positive effects on the Operational Excellence perspective. Then the Operational Excellence perspective will have positive effects on the User Orientation perspective. Finally, the User Orientation perspective will have positive effects on the Business Contribution perspective. This research tests the validity of these hypothesized casual effects and the sub-hypothesized causal relationships. For the purpose, we used the Partial Least Squares approach to Structural Equation Modeling(or PLS Path Modeling) for analyzing multiple IT BSC CSFs. The PLS path modeling has special abilities that make it more appropriate than other techniques, such as multiple regression and LISREL, when analyzing small sample sizes. Recently the use of PLS path modeling has been gaining interests and use among IS researchers in recent years because of its ability to model latent constructs under conditions of nonormality and with small to medium sample sizes(Chin et al., 2003). The empirical results of our study using PLS path modeling show that the casual effects in IT BSC significantly exist partially in our hypotheses.

여자고등학교의 보건교육과목 설정에 관한 기초적 조사 연구 (A Study on the Establishment of Health Education Subject in Girl's High School)

  • 백운경;홍양자
    • 보건교육건강증진학회지
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    • 제9권1호
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    • pp.1-13
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    • 1992
  • The purpose of this thesis is to provide the framework of the health education curriculum on a school level which should be accomplishe in futrue and farthermore to establish the health education as a independent and regular course. The relation among the status in quo and the satisfaction degree of health education, the degree of the knowledge about health, the degree of the understanding of the health education and the degree of requirement for the health education curriculum has been analyzed in this paper. The research has been carried out through the questionnaire forms distributed to the girl students and the instructors at a few general senior high school and vocational senior high schools in Seoul, and the consequences are as follows : 1. As to the degree of understanding of the health education, it has been indicated that the health education should be performed one or two hours a week from the elementary school for all the boy and girl students by the experts trained in the departments concerned with health. 2. Concerning the degree of requirement for health education curriculum, the high school girl students have shown the need for first aid, sex education, environmental health, drinking, smoking, drug abuse, maternal and child health, industrial health, safety health, mental health, growth & development, epidemiology, the old health in the order named. On the other hand, the instructors have shown the need for drinking, smoking, drug abuse, sex education, maternal and child health, public health and industrial health also in the order named. The items having low degree of requirement are biostatistics, community health and health administration in case of the gril students and biostatistics, health administration and health economics in case of the instructors. 3. The status in quo and the satisfaction degree of the health education has proved higher in senior high school curriculums than in junior high school curriculums, and the most instructive course about health has turned out to be gymnastics in junior high school and the training course in senior high school respectively. 4. As to the degree of understanding of the health education in case of the girl students, the significance has been found between the health condition and the time for performing the health education, the monthly income and the objects for the health education, and the school records and the school hours per week. The significance has been shown only in regard to the school records in case of the degree of requriement for the health education curriculum. 5. The degree of requirement for the health education in case of the instructors has shown the significance between the teching career and the need for the health education. In addition, the degree of requirement for the health education curriculum has indicated significance with regard to sex and age. 6. The degress of the understanding of the health education according to the degree of knowledge about health and the degree of requirement for the health educatio curriculum have been all turned out to be statistically significant. 8. Among the factors which have an influence on the degree of the understanding of the health education, the recognition of the relation between the health course and the training course has significatly influenced the selection of the health education instructors. In additon, the understanding of the need for the health eduation has significantly influenced the objects for the instructors and the school hours, and the understanding of the need for establishing the health education course has significatly influenced the time for performing the health education.

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양식어류의 선별과정중 수심감소와 어류의 수조이동에 따른 스트레스 반응 (Stress Responses of Cultured Fishes Elicited by Water Level Reduction in Rearing Tank and Fish Transference during Selection Process)

  • 허준욱;장영진;임한규;이복규
    • 한국수산과학회지
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    • 제34권5호
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    • pp.465-472
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    • 2001
  • 양식현장에서 선별작업시 처리되는 사육수조의 수심감소와 어류이송에 따른 넙치 (대, 소)와 큰민어의 스트레스 반응을 알아보기 위하여 스트레스 지표로 알려져 있는 혈액학적 요인, 코티졸, 글루코스, 젖산 및 삼투질 농도를 조사하였다. 수심감소에서 넙치대의 Ht는 실험전 $14.6\%$였던 것이 10시간째까지 계속 높아져 $23.5\%$를 보였으나, 실험종료시 (46시간째) $14.4\%$로 회복되었다. 넙치대의 코티졸 농도는 실험개시시에 1.9ng/mL였던 것이 22시간째에 13.7 ng/mL로 높아졌고, 46시간째에는 4.0ng/mL로서 개시시의 수준으로 회복되었다. 큰민어는 4시간째 282.3ng/mL, 22시간째 350.5ng/mL로 높아졌으나, 실험종료시에는 16.0ng/mL로 낮아졌다. 큰민어의 글루코스는 실험개시시 57.0mg/dL로부터 22시간째에는 138.0mg/dL조 유의하게 높아졌다 젖산은 모든 어종에서 유의차가 인정되지 않았다. 어류이송에 따른 넙치대의 RBC는 실험개시시의 $1.9\times10^6 cell/{\mu}L$로부터 실험종료시의 $4.2\times10^6 cell/{\mu}L$로 높아졌다. 큰민어의 Hb는 실험개시시의 9.8g/dL로부터 실험종료시에 20.4g/dL로 개시시 보다 유의하게 높았다. 넙치대의 코티졸 농도는 실험개시시의 1.2ng/mL로부터 이동 1시간째에 95.3ng/mL로 높아졌고, 큰민어도 실험개시시의 5.5ng/mL로부터 1시간째에 175.5ng/mL로 높아졌다. 큰민어의 글루코스는 1, 3시간째 각각 132.5 mg/dL, 129.5 mg/dL로 실험개시시 46.5 mg/dL 보다 높은 수준을 보였다.

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